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US 2020/0319027 A1Published application
Spectral Imager System Using a Two Dimensional Filter Array
AssigneeSpectral Sciences, Inc.
InventorsMarsha J. Fox, Steven M. Adler-Golden, Neil Goldstein, Benjamin St. Peter
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Abstract
A system for acquiring both the spatial and spectral dimensions of a spectral image cube either simultaneously with a single frame acquisition, or sequentially with a small number of frames, using a sensor that uses an array of pixel-size, narrow wavelength bandpass filters placed in close proximity to a focal plane array (FPA), and for processing the acquired data to retrieve spectral image cubes at the pixel resolution of the FPA.
Claims25
An optical sensor, comprising:
- a focal plane array (FPA);
- and
- an array of pixel-size, narrow wavelength bandpass filters arranged in rectangular or square groupings called superpixels in front of the FPA, wherein each superpixel comprises N rows and M columns of pixels, wherein the array comprises up to N by M adjacent superpixels, wherein each bandpass occurs once in each superpixel, wherein the arrangements of the filters within the superpixels and the arrangement of the superpixels in an array of adjacent superpixels are such that each bandpass occurs only once in each row and column of the array of adjacent superpixels.
A system, comprising:
- an optical sensor with an output, the optical sensor comprising:
- a focal plane array (FPA);
- and
- an array of pixel-size, narrow wavelength bandpass filters arranged in rectangular or square groupings called superpixels in front of the FPA, wherein each superpixel comprises N rows and M columns of pixels, wherein the array comprises up to N by M adjacent superpixels, wherein each bandpass occurs at least once in each superpixel, wherein the arrangements of the filters within each superpixel is different from any other superpixel or is repeated infrequently, and wherein the filter array is placed within one pixel dimension of the FPA;
- and
- a processor that is configured to process the output of the optical sensor.
3 more elements
Dependencies are inferred from the claim text.